SCENARIO 19-1
A local newspaper has 10 delivery boys who each deliver the morning paper to 50 customers every day.The owner decides to record the number of papers delivered on time for a 10-day period for one of the delivery boys and construct a p chart to see whether the percentage is too erratic.

-Referring to Scenario 19-1,what is the numerical value of the center line for the p chart?
A)0.926
B)0.911
C)0.885
D)0.500

Question

SCENARIO 19-1
A local newspaper has 10 delivery boys who each deliver the morning paper to 50 customers every day.The owner decides to record the number of papers delivered on time for a 10-day period for one of the delivery boys and construct a p chart to see whether the percentage is too erratic.

-Referring to Scenario 19-1,what is the numerical value of the center line for the p chart?
A)0.926 
B)0.911 
C)0.885 
D)0.500

Quizplus · Accepted Answer

The center line for a p chart is calculated as the average proportion of defectives in the sample. In this case, the average proportion of defectives is 0.926, so the center line is 0.926.

SCENARIO 19-1 A Local Newspaper Has 10 Delivery Boys Who Each Deliver